Answer: The concentration of the drug in the patient’s bloodstream after t minutes is given by C(t) = 0.06t - 0.0002t^ (2), where 0 <= t <= 240 and the concentration is measured in milligrams per milliliter. The maximum concentration of the drug in the patient’s bloodstream occurs at t = 150 minutes and is equal to 4.5 milligrams per milliliter.
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